Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 52bf474563c630acd04d86fab98b674a2a1e585595b5111850f0c9511a3156c0:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^